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Fiesta28 [93]
3 years ago
8

A village school starts at 8.30am and end at 3.45pm.how long is the school day​

Mathematics
2 answers:
vaieri [72.5K]3 years ago
4 0
7 hours and 15 minutes
klasskru [66]3 years ago
3 0

Answer:

7 hours and 15 minutes.

Step-by-step explanation:

Draw a timeline for this question.

8.30 + 7 hours = 3.30pm or 15 30

3.30 + 0.15 minutes = 3.45 or 15 45

7 hours + 0.15 minutes = 7 hours and 15 minutes.

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The digits of a two-digit number sum to 8. When the digits are reversed the resulting number is 18 less than the onginal
polet [3.4K]

Answer:

53

Step-by-step explanation:

Given: The sum of two digit number is 8

           Reversing the digit will get us number 18 less than the original.

Lets take x as tenth digit of our number and y as unit digit of our number.

As given sum of digit is 8

∴ x+y= 8

∴ y= 8-x -       equation 1

We also know that reversing the digit will get us number 18 less than the original.

∴ 10y+x = 10x +y-18

Now, lets put the value of y from equation 1

⇒ 10(8-x) + x = 10x+ (8-x)- 18

⇒ 80-9x= 9x-10

⇒ 90= 18x

∴ x= 5

Next, substituting the value of x in equation 1

y= 8-x

⇒ y= 8-5 = 3

∴ y= 3

∴ The original number is 53, sum of the digit is 8 and if we reverse the digit of the number, we get 35, which is 18 less than the original number.

7 0
3 years ago
The table shows the minutes students spent studying for their history exam and the scores they received.
Novosadov [1.4K]
Is there a graph maybe post a picture??
6 0
3 years ago
What does $42,690e(0.03)×(20) equal​
Mice21 [21]

Answer:

77,786.251

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
If the measure of angle 2 is 125 degrees, find the measure of angle 3.PLS HELP
Tpy6a [65]
Angle C would be 55 degrees. A straight line is 180 degrees so you would do 180-125 which equals 55. Hope this helps!
3 0
3 years ago
Now we are testing to see whether taking a vitamin supplement each day has significant health benefits. There are no (known) har
ZanzabumX [31]

Answer:

Concluding that people should take vitamin supplement each day when they don't help.            

Step-by-step explanation:

We are given the following in the question:

Hypothesis:

Taking a vitamin supplement each day has significant health benefits and does not have any harmful side effects.

Null hypothesis:

Taking a vitamin supplement each day does not have have significant health benefits.

Alternate hypothesis:

Taking a vitamin supplement each day have have significant health benefits.

Type I error:

  • It the error of rejecting the a true null hypothesis.

So error I for this situation would be concluding that people should take vitamin supplement each day when they don't help.

3 0
3 years ago
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